11.5in. Rear Disc Rotor - Stainless Steel. Fits Big Twin 1981-1999 & Sportster 1979-1999.

Features & Benefits:-

* 1.985" ID

* New disc bolts # CM-9807-10

* Replaces OEM #'s 41791-79, 41789-92, 41791-79B & 41789-92C

Tech Tips:-

* Big Twin and Sportster models 1981-1991 Must purchase Colony Machine counter bore disc bolts # CM-9807-10.

Tech Tips:-

* Will Not Fit Touring 1986-1999.

* Stainless steel grade SUS420, also known as 420 stainless steel. SUS420 stainless steel is used in brake rotors due to its good balance of strength, hardness, and corrosion resistance, making it suitable for the demanding conditions of braking.